I can pick a few out… (source: I was around the reddit community the same time the people in this image were… and also a bit of digging in the comments of the source)
- Rainbow Crash - The dazed looking Rainbow Dash by the top.
- Chillusion - The Lyra with Bon Bon’s mane style. (these are two people, IllusionOfIntegrity and Chinchy. They often used to sling flirty Lyra/Bon Bon emotes at each other, so they got tongue in cheek shipped, hence the ship[ name ‘chillusion’) …It’s possible the yellow pony with pink spikey hair is one of them and the Lyra is another.
- Speeding Turtle - Green pony with a turtle shell with wheels cutie mark
- Rainbow Dash Jedi (RogueDarkJedi) - The other Rainbow Dash, in a jedi robe.
- TotallyNotAFurry - The yellow pony on the left wearing paw gloves and furry ears.
- Tailszefox - Orange pony with white hair and sneakers cutie mark, near the middle right.
- XLR8TER - The blue maned pegasus flying in from the right, just to the right of Tailszefox.
- AdamBombTV - Brown stallion wearing sunglasses and goggles… and a tv with a bomb as a cutie mark.
- Evil Homer - You should be able to find which one this is just by the name.
- Ovenmitt Bandit - As above.
Given more time and a few trips down memory line I could probably name a few others.
